Advertissements

Thanks Caty, i'd forgotten where i originally got the boote.de link and clearly it was you who first posted it to help fbomb with his echomap70dv. That's a touch-screen plotter very like GPSMAP721xs.

Alex, The difference between the 'button' operated devices like echomap50 and 'touchscreen' devices such as yours for entering boot-block is that all you need do is hold the power button until 'Holding' appears on the screen then release it to start the downgrade. With the button devices power is still held but the 'up arrow' button is released. Info:

For placement of gupdate.gcd on the SD card, you can proceed as i said earlier in P#8 and run just ChartplottersUpdatewithSDcard_20140909.exe or, as said to fbomb in the other thread, extract the file and then extract 'program_card.exe' and look inside folder 'Root' to find folder 'Garmin' with the gcd inside. You should read Caty's[Only registered and activated users can see links. ] in the other thread too in case it's relevent to your unit as well.

'Thanking Posts' are banned. To thank someone, and/or to see hidden links and content, use the [Only registered and activated users can see links. ] button below left of the helpful post then refresh your browser [F5 key]. 'Thanking Posts' are banned.Please don't spam. Posts serving no purpose other than to thank or to ask about hidden links are trashed or deleted, it's GPSPower's policy. Please don't spam.[Only registered and activated users can see links. ] should make their first post as a new Intro Thread in [Only registered and activated users can see links. ].

Good morning Neil, (at least here)
the weather here is really miserable right now, its raining cats and dogs. So I didn't have chance to try it yet. Achko on the boote.de forum wrote to me, that I have to propably downgrade first to v 3.40 and then go back to v 3.80. We will see what happend. But since the unit is instaled in my boat, I have to wait till the rain stops pooring. I will wrote the results asap.
Regards
alex

'Thanking Posts' are banned. To thank someone, and/or to see hidden links and content, use the [Only registered and activated users can see links. ] button below left of the helpful post then refresh your browser [F5 key]. 'Thanking Posts' are banned.Please don't spam. Posts serving no purpose other than to thank or to ask about hidden links are trashed or deleted, it's GPSPower's policy. Please don't spam.[Only registered and activated users can see links. ] should make their first post as a new Intro Thread in [Only registered and activated users can see links. ].

Just came back from the marina, everything went well. No problem with the downgrade at all. Even the reset worked by it's self. And my charts are working again. The only thing I have to test is the sonar, but I think it will work too. Just to make sure, and be prepared for all eventualits, yes I would like the v 3.40 too.
Again Neil and Catymag, thank you very much for your help and assistance. Hopefully I can help somebody, someday too.
With best regards from Polar Cirkle
alex

Maybe Ackho said that for your 721 only because echomap50 has to be downgraded to V3.40 to work with other charts. Here's the pack from 6th March '14 for you anyway:

Spoiler: click

[Only registered and activated users can see links. ]

Happy and safe boating to you Alex. Don't hit any innocent icebergs up there .......[Only registered and activated users can see links. ]

'Thanking Posts' are banned. To thank someone, and/or to see hidden links and content, use the [Only registered and activated users can see links. ] button below left of the helpful post then refresh your browser [F5 key]. 'Thanking Posts' are banned.Please don't spam. Posts serving no purpose other than to thank or to ask about hidden links are trashed or deleted, it's GPSPower's policy. Please don't spam.[Only registered and activated users can see links. ] should make their first post as a new Intro Thread in [Only registered and activated users can see links. ].

Behind the Spoiler in [Only registered and activated users can see links. ] you'll find ChartPlotters_FW_09Sept2014.rar. It contains ChartplottersUpdatewithSDcard_20140909.exe. Read Post #12 above for the ways to do the boot block with both touchscreen and button devices.

'Thanking Posts' are banned. To thank someone, and/or to see hidden links and content, use the [Only registered and activated users can see links. ] button below left of the helpful post then refresh your browser [F5 key]. 'Thanking Posts' are banned.Please don't spam. Posts serving no purpose other than to thank or to ask about hidden links are trashed or deleted, it's GPSPower's policy. Please don't spam.[Only registered and activated users can see links. ] should make their first post as a new Intro Thread in [Only registered and activated users can see links. ].

Firmware downgrade for 720 to recognize custom maps

Hi I also ran into same issue today with my newer unit I bought.
I upgraded to latest version V4.30 and now my custom maps no longer work on the Unit and I can't find the older firmware available online anything before v4.10 if someone can help will be appreciated.
Thank you

We use cookies to store session information to facilitate remembering your login information, to allow you to save website preferences, to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.